Hertel 41120510 Roughing End Mill 1/2 in 4 Flute Cobalt

Product Description

The HERTEL 41120510 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a bright, uncoated finish, it delivers solid wear resistance and heat tolerance in demanding cutting environments. The tool measures 0.5 inches in diameter with a matching 0.5-inch shank, a 2-inch length of cut, and a 4-inch overall length. Four fine-pitch flutes and right-hand cutting and flute direction make this a standard choice for general-purpose roughing passes on steel, stainless, and other ferrous materials. Machinists and tool-and-die professionals reach for this profile when roughing out stock before finishing passes.

This end mill suits vertical machining centers, manual knee mills, and CNC milling operations in job shops, maintenance facilities, and production environments. Its regular-length geometry fits standard tool holders with a 0.5-inch collet or end mill adapter. The fine-pitch configuration handles tighter chip loads well and is appropriate for applications where surface finish after roughing is still a consideration. The centercutting design also allows plunge entry when the operation calls for it.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance compared to standard M2 tooling
• 4 fine-pitch flutes with right-hand cut and right-hand helix for efficient chip evacuation
• Centercutting geometry allows direct plunge milling when needed
• Bright, uncoated finish suitable for use with cutting fluid in ferrous and non-ferrous applications
• 0.5-inch diameter with matching 0.5-inch shank for direct collet or end mill holder fitment
• Single-end design; 2-inch length of cut on a 4-inch overall length regular-length blank

Compatibility

Designed as a standard roughing end mill for use in any milling machine accepting a 0.5-inch shank tool holder, including ER collet chucks, R8 collets, and set-screw style end mill holders common on vertical knee mills and CNC machining centers.

Installation Notes

Installation is performed by a machinist or tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the holder and torque the retention mechanism according to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cut, as excessive runout accelerates flute wear and degrades cut quality.